Inventors:
Ronald L. Fenton - Wood Dale IL
Robert Brandt - New York NY
Assignee:
Safetytech Corporation - Mount Prospect IL
International Classification:
B65D 2502
Abstract:
Generally there is provided an expanded foil sheet having an array of openings in a pattern exhibiting a plurality of dimension, which sheets are rolled or stacked, such that juxtaposed openings differ in dimension, to form a thermal filler mass for a tank. Alternatively, two or more foil sheets, each exhibiting openings or a pattern of openings of dimension differing from the openings of adjacent sheets are combined in a roll or stack to form the filler mass. Finally, in a further feature, the filler mass is adhered to the tank wall.